196 lines
5.8 KiB
Markdown
196 lines
5.8 KiB
Markdown
---
|
|
title: Testing your pattern
|
|
order: 250
|
|
---
|
|
|
|
With the basic outline of your pattern ready, now would be a good time
|
|
to test it to see how well it adapts to different measurements,
|
|
and the range of options we provided.
|
|
|
|
<Tip>
|
|
|
|
###### No more grading
|
|
|
|
FreeSewing patterns are *made-to-measure*, which means that you don't need to
|
|
grade your pattern to provide a range of sizes. You should sample your pattern
|
|
for different measurements and options to see how well it adapts.
|
|
|
|
</Tip>
|
|
|
|
If testing your pattern sounds like a lot of work, you're in luck. FreeSewing can do it
|
|
for you. Click the **Test your pattern** button in the top navigation bar of your
|
|
development environment, and you'll see a number of choices on the right:
|
|
|
|
- Test pattern options
|
|
- Test measurements
|
|
- Test models
|
|
|
|
The [API docs on sampling](/reference/api/pattern/#sample) have all the details on how this works, but
|
|
for now we'll just look at the end result of each of these.
|
|
|
|
## Testing pattern options
|
|
|
|
We used percentage options, which can vary between their minimum and maximum value.
|
|
For these tests, FreeSewing will divide that range into 10 steps and draft your pattern for each step.
|
|
|
|
Click on any of the options we've added to our pattern, and your bib will be drawn with that option sampled.
|
|
|
|
### lengthRatio
|
|
|
|
The `lengthRatio` option controls the length of our bib. Testing it confirms that it only influences the length:
|
|
|
|
<Example
|
|
caption="Your bib with the lengthRatio option sampled"
|
|
sample
|
|
part="bib"
|
|
pattern="tutorial"
|
|
settings={{
|
|
sample: {
|
|
type: "option",
|
|
option: "lengthRatio"
|
|
}
|
|
}}
|
|
/>
|
|
|
|
### neckRatio
|
|
|
|
The `neckRatio` option will determine the size of the neck opening.
|
|
For a the same `head` measurement, varying this option should result in bibs with increasingly larger
|
|
neck opening.
|
|
|
|
Testing it confirms this. We can also see that as the neck opening gets smaller, we will rotate the straps
|
|
further out of the way to avoid overlap:
|
|
|
|
<Example
|
|
caption="Your bib with the neckRatio option sampled"
|
|
sample
|
|
part="bib"
|
|
pattern="tutorial"
|
|
settings={{
|
|
sample: {
|
|
type: "option",
|
|
option: "neckRatio"
|
|
}
|
|
}}
|
|
/>
|
|
|
|
### widthRatio
|
|
|
|
The `widthRatio` option will determine the width of our bib.
|
|
For a the same `head` measurement, varying this option should result in increasingly wider bibs.
|
|
|
|
If we test it, we can see that it works as intended. But there's one thing that perhaps requires your attention.
|
|
Making the bib wider shortens the length from the bottom of the neck opening to the bottom of the bib.
|
|
Thereby making the bib shorter when it's worn.
|
|
|
|
Even if the *total length* of the bib stays the same, the *useable length* shortens when the bib is made wider.
|
|
Users will not expect this, so it's something that we should fix in our pattern.
|
|
|
|
<Note>
|
|
|
|
Adjusting the pattern to make the `widthRatio` not influence the *useable length* of the bib is not
|
|
covered in this tutorial. It is left *as an exercise to the reader*.
|
|
|
|
</Note>
|
|
|
|
<Example
|
|
caption="Your bib with the widthRatio option sampled"
|
|
sample
|
|
part="bib"
|
|
pattern="tutorial"
|
|
settings={{
|
|
sample: {
|
|
type: "option",
|
|
option: "widthRatio"
|
|
}
|
|
}}
|
|
/>
|
|
|
|
## Testing measurements
|
|
|
|
Testing a measurement will vary that measurement 10% up or down while leaving everything else the same.
|
|
This gives you the option to determine how any given measurement is influencing the pattern.
|
|
|
|
For our bib, we only use one measurement, so it influences the entire pattern:
|
|
|
|
<Example
|
|
caption="Your bib with the head circumference measurement sampled"
|
|
sample
|
|
part="bib"
|
|
pattern="tutorial"
|
|
settings={{
|
|
sample: {
|
|
type: "measurement",
|
|
measurement: "head"
|
|
}
|
|
}}
|
|
/>
|
|
|
|
## Testing models
|
|
|
|
Whereas testing a measurement will only vary one individual measurement, testing models will
|
|
draft your pattern for different sets of measurments, which we refer to as *models*.
|
|
|
|
On the surface, the result below is the same as our measurement test. But that is because our bib
|
|
only uses one measurement. So testing that one measurement ends up being the same as testing a complete
|
|
set of measurements.
|
|
|
|
But most patterns use multiple measurements, and you'll find this test gives you insight into how your
|
|
pattern will adapt to differently sized bodies.
|
|
|
|
<Example
|
|
sample
|
|
caption="Your bib sampled for a range of baby sizes"
|
|
pattern="tutorial"
|
|
part="bib"
|
|
settings={{
|
|
sample: {
|
|
type: "models",
|
|
models: {
|
|
baby1: { head: 340 },
|
|
baby2: { head: 350 },
|
|
baby3: { head: 360 },
|
|
baby4: { head: 370 },
|
|
baby5: { head: 380 },
|
|
baby6: { head: 390 },
|
|
baby7: { head: 400 },
|
|
baby8: { head: 410 },
|
|
baby9: { head: 420 }
|
|
}
|
|
}
|
|
}}
|
|
/>
|
|
|
|
## The antperson test
|
|
|
|
A special case of model testing is the so-called *antperson test*.
|
|
It drafts your pattern with a set of *typical* measurements , and then drafts it again
|
|
with measurements that are 1/10th of those *typical* measurements.
|
|
|
|
It is named after [the cartoon character](https://en.wikipedia.org/wiki/Ant-Man_(film)) who can shrink,
|
|
yet somehow his suit still fits.
|
|
|
|
The purpose of the antperson test is to bring out areas in your pattern where you made assumptions
|
|
that will not properly scale.
|
|
Many drafting books will tell you to *add 3cm there* or *measure 2 inch to the right*. Those instructions
|
|
don't scale, and you should avoid them.
|
|
|
|
The best patterns will pass the antperson test with 2 patterns exactly the same, where one will simply be 1/10th the scale of the other.
|
|
|
|
<Example
|
|
sample
|
|
caption="Congratulations, your bib passes the antperson test"
|
|
pattern="tutorial"
|
|
part="bib"
|
|
settings={{
|
|
sample: {
|
|
type: "models",
|
|
models: {
|
|
ant: { head: 39 },
|
|
man: { head: 390 },
|
|
}
|
|
}
|
|
}}
|
|
/>
|
|
|
|
When you're happy with how your pattern passes these tests, it's time to complete it.
|